National Journal: Presidential Power Rankings

“With Bachmann now occupying much of the same ultra-conservative, proudly evangelical platform Santorum claims, the former senator will have an even harder time standing out.”

Rank: 7

Chris Cillizza: The Fix blog, Washington Post

“In the absence of Bachmann or former Alaska governor Sarah Palin he might be able to get some traction in a place like Iowa as the choice of social conservatives. With either (or both) of them in the race, it’s hard to see how Santorum carves out space for himself.”